Etiquette Checker features:

• Alcohol mode: Gauges your alcohol level in 0.5 increment.
• Breath mode: Checks how is your breath condition on a scale of 1-6 (6 is worst).
• Auto-off
• LCD Backlight display

How to use?
Easy.
Simply blow or breath into the tester, then you get a results.
You can check the quality level of your breath from 1 (:very good)  to 6 (:worst).
or Alcohol level in 0.5 increments.

Etiquette Checker Specification:

• Size: 110 x 30 x 18mm
• Weight: 52g
• Material: ABS plastic
• Power: 2 x AAA battery (included)
• Instructions (in Japanese)